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Fast nearest neighbor search with distance bounds

Student: Andrey Igoshin

Supervisor: Mikhail Vladimirovich Batsyn

Faculty: Faculty of Informatics, Mathematics, and Computer Science (HSE Nizhny Novgorod)

Educational Programme: Data Mining (Master)

Year of Graduation: 2020

Today, computer vision technologies are becoming more and more in demand. One of the tasks of computer vision is the task of identifying a person, as, for example, in Apple’s FaceID technology. This work is devoted to the development of an algorithm that allows you to speed up the identification algorithm. The paper proposes an approach that involves clustering a database of photographs followed by a search in these clusters in the given order. Two algorithms are proposed in the work: one using K-Means for clustering, and the other using VAE (Variational Auto Encoder). Two varieties of the brute force algorithm are also implemented. Comparison by perfomance of the four algorithms is also made. According to the results of comparison, these two algorithms really surpass the brute force algorithms in perfomance.

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